A series of novel triphenylphosphonium (TPP) cations of the diterpenoid isosteviol (1, 16-oxo-ent-beyeran-19-oic acid) have been synthesized and evaluated in an in vivo phenotypic sea urchin embryo assay for antimitotic activity. The TPP moiety was applied as a carrier to provide selective accumulation of a connected compound into mitochondria. When applied… (More)

The luminescent colloids have been synthesized through the layer-by-layer assembly of poly(sodium 4-styrenesulfonate) (PSS) and polyethyleneimine (PEI) onto the luminescent core. The latter has been obtained by the reprecipitation of complex Eu[(TTA)(3)1] (where TTA(-) and 1 are thenoyltrifluoroacetonate and… (More)

New water-soluble pectin complexes with Ca(2+), Mg(2+), Co(2+), Cu(2+), Fe(2+), Mn(2+), Zn(2+) on the basis of pectin biopolymer have been synthesized and successfully tested on white rats. For a starting, we have obtained a sodium pectate to enhance solubility of target complexes as a whole. Shortly afterwards, running the reaction of ligand exchange of… (More)

The present work introduces the determination of fluoroquinolone antibiotics (FQs) in aqueous solutions through the fluorescent response of Eu(TTA)3 and [Eu(TTA)(3)1] (TTA(-) and 1 are thenoyltrifluoroacetonate and phosphine oxide derivative) complexes encapsulated into the polyelectrolyte capsules fabricated through layer-by-layer deposition of poly(sodium… (More)

287 One of the main tasks of modern agricultural sci ence is the identification and development of new plant growth regulators that are environmentally safe, multifunctional, physiologically active compounds with both growth regulating and anti stress proper ties. Steviol (13 hydroxykaur 16 en 18 oic acid), the aglycon of diterpene glycosides of the plant… (More)

411 One of the priority fields of studies in the modern plant growing is the regulation mechanisms of the plant growth and resistance provided by different chemical compounds with a wide range of activity. Diterpenoids constitute a large family of natural com pounds with various types of biological activity and geometry of linked hydrocarbon cycles. Among… (More)

Nicotinoyl- and isonicotinoylhydrazones of 2-dimethoxyphosphoryl-2-methylpentan-4-one (the active ingredient of the medicinal preparation Dimephosphone) were synthesized. It was shown that crystals of both hydrazones contained a single spatial form of the EC=N isomer. The dimephosphone pyridinoylhydrazones existed in slightly polar and polar solvents as a… (More)

Over the last decade isoindigo derivatives have attracted much attention due to their high potential in pharmacy and in the chemistry of materials. In addition, isoindigo derivatives can be modified to form supramolecular structures with tunable morphologies for the use in drug delivery. Amphiphilic long-chain dialkylated isoindigos have the ability to form… (More)

At the present time germanium has not yet been classified as a vitally important element. However, it is concentrated in significant amounts in many plants (including medicinal plants such as ginseng~ aloe, garlic, and bamboo). The analysis of foods of animal and plant origin shows [I] that germanium is contained in almost all of its forms in amounts (more… (More)